Causal Fairness under Unobserved Confounding: A Neural Sensitivity Framework

Fuente: arXiv
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Autori principali: Schröder, Maresa, Frauen, Dennis, Feuerriegel, Stefan
Natura: Preprint
Pubblicazione: 2023
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_version_ 1866910658530902016
author Schröder, Maresa
Frauen, Dennis
Feuerriegel, Stefan
author_facet Schröder, Maresa
Frauen, Dennis
Feuerriegel, Stefan
contents Fairness for machine learning predictions is widely required in practice for legal, ethical, and societal reasons. Existing work typically focuses on settings without unobserved confounding, even though unobserved confounding can lead to severe violations of causal fairness and, thus, unfair predictions. In this work, we analyze the sensitivity of causal fairness to unobserved confounding. Our contributions are three-fold. First, we derive bounds for causal fairness metrics under different sources of unobserved confounding. This enables practitioners to examine the sensitivity of their machine learning models to unobserved confounding in fairness-critical applications. Second, we propose a novel neural framework for learning fair predictions, which allows us to offer worst-case guarantees of the extent to which causal fairness can be violated due to unobserved confounding. Third, we demonstrate the effectiveness of our framework in a series of experiments, including a real-world case study about predicting prison sentences. To the best of our knowledge, ours is the first work to study causal fairness under unobserved confounding. To this end, our work is of direct practical value as a refutation strategy to ensure the fairness of predictions in high-stakes applications.
format Preprint
id arxiv_https___arxiv_org_abs_2311_18460
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Causal Fairness under Unobserved Confounding: A Neural Sensitivity Framework
Schröder, Maresa
Frauen, Dennis
Feuerriegel, Stefan
Machine Learning
Artificial Intelligence
Computers and Society
Methodology
Fairness for machine learning predictions is widely required in practice for legal, ethical, and societal reasons. Existing work typically focuses on settings without unobserved confounding, even though unobserved confounding can lead to severe violations of causal fairness and, thus, unfair predictions. In this work, we analyze the sensitivity of causal fairness to unobserved confounding. Our contributions are three-fold. First, we derive bounds for causal fairness metrics under different sources of unobserved confounding. This enables practitioners to examine the sensitivity of their machine learning models to unobserved confounding in fairness-critical applications. Second, we propose a novel neural framework for learning fair predictions, which allows us to offer worst-case guarantees of the extent to which causal fairness can be violated due to unobserved confounding. Third, we demonstrate the effectiveness of our framework in a series of experiments, including a real-world case study about predicting prison sentences. To the best of our knowledge, ours is the first work to study causal fairness under unobserved confounding. To this end, our work is of direct practical value as a refutation strategy to ensure the fairness of predictions in high-stakes applications.
title Causal Fairness under Unobserved Confounding: A Neural Sensitivity Framework
topic Machine Learning
Artificial Intelligence
Computers and Society
Methodology
url https://arxiv.org/abs/2311.18460